[issue1676] tmpfs fsstress panic

[Matthew Dillon]

:New submission from Venkatesh Srinivas <me at acm.jhu.edu>:
:
:tmpfs panic-ed on an fsstress run fairly quickly; the tmpfs volume was limited 
:to 256MB, the VM had 512MB of RAM and 512MB of swap. I was unable to grab 
:coredumps, since there is no dump device configured yet.
:
:I'm somewhat confused by the backtrace; tmpfs_nrename doesn't take more than 1 
:argument and it never directly calls lockmgr; vn_lock does...

    We're gonna start needing kernel dumps to really track these down.
    If you send me a private email with your ssh public key and prefered
    username I will set up a leaf.dragonflybsd.org shell account for
    you that you can upload cores into.

						-Matt